文档介绍：计算机科学
Computer Science
ISSN 1002-137X,CN 50-1075/TP
个子协议（JOIN，EXIT，PCLEAR，RCLEAR），分别解决节点加入、退出的问题以
及对作恶节点做出惩罚，使得系统拥有动态的网络结构。结果证明新加入的 4 个子协议本身具有良好的安全性和活性，且不
影响原始 PBFT 算法的安全性和活性。最后，实验结果表明，DPBFT 算法相比于传统 PBFT 算法具有更好的共识效率。
关键词：联盟链；共识算法；拜占庭容错；信任度；主节点选取
中图分类号 TP311 DOI：
Improvement of PBFT Algorithm Based on Consortium Blockchain
XIE Zhuo, ZHANG Zhi-hong, LI Lei, FENG Ying-jie and CHEN Jing
School of Information Engineering，Zhengzhou University，Zhengzhou, 450000, Chain
Abstract As a new technology, blockchain has attracted the attention of all walks of life since its birth. Consensus algorithm is one of the core technologies
of blockchain technology, and the research of consensus algorithms is also the top priority of blockchain development. Aiming at the problems of PBFT, which
is widely used in consortium blockchain, such as the random selection of primary node and the inability of nodes to join and exit dynamically, an dynamic PBFT
algorithm (DPBFT) is proposed. Firstly, the selection method of primary nod